Air-brush.



T., A. DE VILBISf MB, BRUSH. PPs-.muren Hmm im. 1e, mu.

191345,@660 I f www@ mov. 26, m2.

.mk Q

TEMS DE VILBISS, GF TQLED, GEM).

AIR-BRUSH.

Loeveee.

i A, En Vin he lmited hoodies7 and e ".5 in the munity of Lucas uio, have invenieci n Certain new .end ueeul i lrdrusli; und l do hereby fleelare the following; lo be a full, clear, and exact description oi the invention, suoli es will enable others Skilled in the eri to which it appel-mins to melee endnse the saine, reierenee being had lo the accompanying drm"- inge, and to the gures of reference marked thereon, which form e. part this specifica etornizers ei the typ-e partieuierly fidapted for ilie oi inc-quer, varnish, paint, bronze or omer i gineut of e liquid or' pow dery nelure in form upon e receiving surface.

he object of my invention is the provision of au improved instrument of this Chriaeter which is simple, light and durable its eenetrueioi;t inexpensive -omainlinet-ure,' -find @my A further provision o' Lhe L nveni-on i5 emily one nozzle.

The invention is i'ully described in following' sieoiiieation, and vinile Nin its broader it is Capable of emb linien?, in numerous orms,e preferred embodiment thereof is illustreted in the aceoinpanying drawings, in whieli,-

Figure l is e side elevation of an instru ment embodying; my invention. Fig. 2 a top plan View thereot and Fig. irl is a eentrel, vertical., longitudinal `rlon of the upper portion there t with the handle partly broken away.

Beten' ig 'lo the drawings, i designates the barrel or spray-heed of the instrument,

which barrel of elongated form and pro i vided throughmit its length with :i bore 2. A nipple 3 projewts laterally from the under side of this barrel, preferably adjacent to the forward end thereof. und iS adapted for the iittuffliing of a hose or tube coupling 3, thereto, the tube of which (not shown) lends l Speoication of Let-ters Patent.

Agaplefiien filed ctober 16,

l ateiiied Noir@ 1911. 'seri-ax no. serieu.

to any suitable source of i or other substance lo he er form to a receiving Surface. The forward end oi: ie 'i equipped with the customary enne n zles and 6, which o instance being respec und into TlJie barre! end., air or fluid pressure iu liquid nozzle, or that; through ille hexerei, to be sprayed.

An enlergenm entV instance on portion of the ne ie .oored to a oham'ber wliiffl in eoinnw with the chamber lie-tween 'lle no :des end Slhreiigli a passer 1G in here with a source o-i SLM pressure throw nipple ll and dexia.) le

shown) the tube eno opl i, een o nected li a cou aline' El in an 1' oher sini,

l l a aille manner, :i 'valve is disgiesed wiel the Chamber il vfor Seeiing; forwardly eggoi eent le ihereiii and e stem 1li i ine; forward hereizom threizgii d orerd end o? tl, frueher.' soiled expense spri ser iv-plug i?? which e e ehelnoer 8, and the nic-.in the lelier seated. u A plunger 1S ie niountel for reeigiro'w movemens in the rear end portion bore 2 of the iserrel, a pin or projecting from isiorward end wi l; im free end projectingq within the throat of the nozzle 6 and normally closing; the res iet-ed discharge Orifice thereof. Thepurpe. oi the pin or stein 19 is threetolmnamelj, to serve as a valve to vclose the discharge orifice of the liquid nozzle when the inetrulnen't ie not being operated, to clean such orifice of accumulated metter, end to ceperte 'with die conical form of the nozzle to regulate ihe qunntit;r of discharge of pigment or other substance therefrom and the consev quent spray density, as will hereinafter be more fully desnribed.

A cap or cylinder 20 is threjided or othert wise suitably attavched to the rear end of the hei-rel l and has its bore preferably slightly h1 vger than the barrel bore and forming an extension t-hereotl for the rear Aend of the plunger 18 to Work in. A coiled eXei-insion spring 21`is mounted witliin the cap 20 and acts on the rear end of the plunger to norl l i mally hold the plunger at the limit of its forward movement, which movement is lirng ited by a shoulder 22 on the plunger coacting with the rear barrel end, as is apparent. A11 adjustable vstop screw 23 threaded through the rear end of the cap 2Q and coacts with a stem 24 projecting from the rear end of the plunger 18 within the spring 21 to limit the opening or rearward movements however, be formed in any other suitable f manner.

A control lever 27 has its upper end portion forked and straddling the barrel 1 in advance oLt-he handle with the free or 4 upper ends of its furcations pivoted to the ree'end portion ofthe finger 26,-as at 2S, and has its lower end extended a short disto the practical operation of a device of this character itis not necessary to connect the operable parts in the manner described.

36 designates a spur, which projects for "ward from the handle 25 adjacent to the lower end of the lever 27 to serve as a guard therefor, and also rests upon the second finger of the hand grasping the handle to support the handle in proper position withg out tightly gripping it forsuch purpose.

The operation of nl v improved instrument is as follows: The nipples 3 and l1 being respectively connected to suitable sources of pigment or other substance to be sprayed and air or other suitable fiuid pressure, and the stop-screw Q3 being set for the desired spray density, the operator giasps the handle 25 in one hand with preferably the first finger of such hand engagin the control lever or trigger 27. lle then t raws the lever back until stopped bythe plunger striking thc stop-serew 23, or to a lesser extent as desired, thus imparting proper proportional opening movements to the airvalve 13 and the plunger 18, such move,

linents being against the influence of the tance beloi. the barrel and preferably fashvalve 13 the actuating air or other fluid ioned in the form of a trigger to facilitate an en aging and rearward moving of the same y the first finger of a hand grasping the handle.

A bar 29 is pivoted at its rear end to one side of the lever 27 adjacentl to its pivot, as at 30, and projects forward therefrom at one side of the enlargement 7, with .its 'forward eral terminating in advance thereof and bent laterally in abutment with the outer end ot it l' of accumulated mutter, the operator merely releases4 the pressure of his linger upon the the air valve stem 15. The bar 29 is shown as provided at its bent end with a socket 31 iny which the outer stem end seats, and is `over the barrel 1 by a y Jke and in notched thrust en agement with studs 34 projecting laterally rom opposite sides of the lunger 18 through registering slots 35 in t e rear end portion o the barrel. i

It is apparent with this constructlon that a rearward movement of the control-lever 27 will impart simultaneous o eniiig movements to the fluid pressure va ve 13 and the plun er 18, andthat the relative points of attac in of the bars 29 and 32 to the lever causes t e plunger to have greater movements than the fluid valve. I wish it understood, however, that while it is preferable springs lti and 2l. Upon an opening of the under pressure rushes into the nozzle chamber t) and discharges therefrom in a thin stream around the discharge end of the nozzle thus creating a suction oi' vacuum action within such nozzle to draw the liquid pigment or other substance with which the barrel is connected, into the barrel and out- 'ward through the nozzle (i. as is w Hinderlstood in the ait. To clean the li I d nozzle lever 27, thus ermitting the plunger to move forward or its pin l) to close and clean the liquid hozzle orifice and the airvalve 13 to close. The spray density can be easily regulated while the instrument is being operated by siiupl \"`adjustiiiig the stop-screw 23 with the. hand which is not grasping the handle. f

While my inventiontis shown and del scribed used in connection with an apparatus in which material is drawn from a source of supply by the suction action created by the rapid discharge of air ast the end of the nozzle 6, it is also adaptedj for use in the spraying of powdered or granular substances the nature of which would not permit the practical drawing thereof through the nozzle t3, barrel bore 2, etc., by suction, but which must be forced therethrough by some suitable means for such purpose, the discharging of the fluid` in such case around the discharge end of the 'nozzle 6 serving only to pick u and ca Loaa'aee not limited to any specific construction or arrangement of the parts except in so far as such limitations vare specified in the claims.

Having thus described my invention, what- I claim as new and desire to secure by Letters Patent, is

l. In an instrinnent of the'class described, a spray head having an elongated bore with liquid and fluid nozzles at one end thereof, a handle projecting laterally 'from the spray head adjacent to the other endthereof, a

" plunger mounted for reciprocatory movelargement, a trigger ulcruined above the spray head and having its lower end projecting below the spray head in advance of the handle, a linlr` connectingsaid trigger and plunger to impart opening movements to the plungerv'hen thevtrigger is moved to- Ward the handle, and a bar attached to said triggerintermediate said link and the trigger fulcrum and projecting forwardly from the trigger with its free end attached to l saidvalve stem to impart-y opening movements to said stem and it'isvalve when the. trigger is pulled.

2. An air brush having an elongated spray head provided with a passage therethrough and having one end provided with concentric liquid and air nozzles, said spray head also. having'a liquid inlet npple projecting downwardly therefrom a jacent to .its discharge end and having an enlargementori its upper side in opposition tosaid nipple, said enlargement forming an airvalve chamber, which chamber isin .communication with the air nozzle, a valve mounted in said chamber and normally acting to close said communication and having a stem projecting forwardly therefrom without the enlargement, a handle project- Ying laterally from the spray head adjacent to its rear end, said handle having a part Vprojecting upwardly and forwardly there- Jfrom over a spray head, a plunger mounted in said spray head for controlling the liquid discharge orifice, a trigger pivoted above the spray head to said handle part and projecting below the spray head in advance of the handle, a bar connecting'said trigger and plunger to impart opening movements to the plunger when the trigger is pulled toward the handle and a bar pivoted to the trigger above said first har and having its' forward end angled in advance of said enlargement and socketed toreceive the iorward end' of said Valve stem to impart opening movements thereto when the trigger is pulled.

ln testimony whereof, I have hereunto signed my name to this specication in the presence of' two subscribing witnesses. v

'ri-10ans A. nn vinnrss.

Witnesses :A

C. W. Swan, E. E. 'Enom/is, 

